Warning message Node revision 508 not found in node Mechanical properties study for graphene sheets of various size . Perharps it was deleted. Troshina S. V. Russia Home Credit and Financ Bank Limited Liability Company, Верхняя Красносельская ул., 38/19 стр. 1, Москва svetatroshina@gmail.com Author's articles Applicathion the Pontryagin‘s Maximum Principle to Optimal Economics Models